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R30016 Cobalt vs. ASTM A732 Cast Steel

R30016 cobalt belongs to the cobalt alloys classification, while ASTM A732 cast steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is R30016 cobalt and the bottom bar is ASTM A732 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
190
Elongation at Break, % 8.4
4.0 to 25
Fatigue Strength, MPa 290
230 to 750
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 85
72 to 73
Tensile Strength: Ultimate (UTS), MPa 1010
460 to 1470
Tensile Strength: Yield (Proof), MPa 580
310 to 1340

Thermal Properties

Latent Heat of Fusion, J/g 320
250 to 260
Melting Completion (Liquidus), °C 1360
1440 to 1460
Melting Onset (Solidus), °C 1270
1400 to 1420
Specific Heat Capacity, J/kg-K 450
470 to 480
Thermal Conductivity, W/m-K 15
39 to 50
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.1 to 7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.2 to 8.9

Otherwise Unclassified Properties

Density, g/cm3 8.5
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 7.7
1.4 to 1.7
Embodied Energy, MJ/kg 110
19 to 24
Embodied Water, L/kg 500
47 to 54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 72
45 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 770
260 to 4770
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 33
16 to 52
Strength to Weight: Bending, points 26
17 to 37
Thermal Diffusivity, mm2/s 3.9
10 to 14
Thermal Shock Resistance, points 24
14 to 43